Bespoke 4-storey London house, pool, gym and cinema

Templewood New build, bespoke 4-storey London house with internal pool, gym, cinema, garage and six bedrooms.

Overview:

Brief and Targets:

Comply with Planning Consent Condition of Code for Sustainable Homes Level 4, with increased targets (50%) for the Energy, Water and Materials Categories. Steel frame with brick and block walls, concrete floors, timber and copper roof.

Sustainability Initiatives:

BS8206:Pt2-compliant Daylighting, Lifetime Homes, Secured by Design, ‘green’ roof. A complex built form required a sophisticated approach to the energy efficiency strategy, including Photovoltaic panels at one end, with an air permeability target and numerous Thermal Bridging Details at the other. The thermal bridging calculations carried out by Abba provided an average Psi value low enough to just enable compliance with the mandatory energy targets. Abba worked closely with the Architect on cross-section detailing of critical junctions. We then carried out many individual Thermal Bridging calculations and iterations, to both obtain an average Psi value which helped the scheme meet the Planning-critical energy targets as well as keep within the designed intent of plan and section room dimensions.

GWP<5 (various, including PUR, PIR, EPS, XPS). Thermoblock used in place of some blockwork to improve contiguity

Heating:

Gas condensing boiler to underfloor heating

Controls:

Weather compensation

Hot water:

1000 litre HWC with 80mm foam insulation

Ventilation:

MVHR (SFP 0.8; efficiency 89%)

Cooling:

Split system (EER 4:1)

Renewables:

PV

Low E lighting:

100%

Points of Interest:

Challenging site in Planning terms (removal of young building), conscientious and pro-active Project Team, stringent neighbourhood criteria for the Contractor to meet during the whole of the construction period. This was a substantial new build property within an exclusive residential area, where every square foot on plan and every inch on section is extremely valuable. Therefore maximising internal finished floor area within a suitably rationalised plan using optimised envelope dimensions was key. The ambitious one-off design intent required a carefully matched approach to energy efficiency in order to meet the targets, so from an early stage Abba advised on the overall energy strategy in support of the Architect and Building Services Consultant.

"I have worked with Abba on various projects over the last couple of years, they have always worked efficiently and the assessments provided have been accepted by the relevant local planning authorities. The assessments have assisted in me securing planning permission, which as a planning consultant, is what I require." - Town Planning Bureau

Sensible Energy Saving Tip

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